{"id":1460,"date":"2025-08-11T12:03:58","date_gmt":"2025-08-11T12:03:58","guid":{"rendered":"http:\/\/schumann.jp\/?p=1460"},"modified":"2025-11-21T16:26:15","modified_gmt":"2025-11-21T16:26:15","slug":"%e3%83%aa%e3%83%a2%e3%82%b3%e3%83%b3%e4%bb%98%e3%81%8d%e3%83%90%e3%83%a9%e3%83%b3%e3%82%b9%e5%9e%8b%e3%83%97%e3%83%aa%e3%82%a2%e3%83%b3%e3%83%97%e3%80%80%e3%83%95%e3%83%a9%e3%83%83%e3%83%88%e3%82%a2-2","status":"publish","type":"post","link":"http:\/\/schumann.jp\/?p=1460","title":{"rendered":"\u30ea\u30e2\u30b3\u30f3\u4ed8\u304d\u30d0\u30e9\u30f3\u30b9\u578b\u30d7\u30ea\u30a2\u30f3\u30d7\u3000\u30d5\u30e9\u30c3\u30c8\u30a2\u30f3\u30d7\u306e\u8a66\u884c\u932f\u8aa4\uff08\u305d\u306e\uff12\uff09"},"content":{"rendered":"\n

\u6b21\u306b\u8003\u3048\u305f\u306e\u306f\u3001\u307a\u308b\u3051\u5e2b\u5320\u306e\u7c21\u6613\u5e73\u8861\u2192\u4e0d\u5e73\u8861\u30b3\u30f3\u30d0\u30fc\u30bf<\/a>\u306e\u5fdc\u7528\u3067\u3042\u308b\u3002\u3000\u4e0b\u8a18\u306e\u3088\u3046\u306b\u4f7f\u3048\u3070\u3001\u5e73\u8861\u5165\u529b\u30fb\u5e73\u8861\u51fa\u529b\u304c\u5f97\u3089\u308c\u308b\u306f\u305a\u3002<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u3068\u3053\u308d\u304c\u3001\u3053\u306e\u56de\u8def\u306f\u5165\u529b\u30a4\u30f3\u30d4\u30fc\u30bf\u30f3\u30b9\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u4e0d\u5e73\u8861\u5165\u529b\u306e\u3068\u304d\u306b\u3001\u30d0\u30e9\u30f3\u30b9\u304c\u4e0d\u826f\u3068\u306a\u308b\u3002\u3000\u307a\u308b\u3051\u5e2b\u5320\u306e\u8a18\u4e8b\u304b\u3089\u3001\uff0d\u5165\u529b\u5074\u306e\u5165\u529b\u62b5\u6297\u3092 30k\u03a9\u3068\u3057\u3001NF\u62b5\u6297\uff08\u4e0a\u56f3\u306e 20k\u03a9\uff09\u3092 60k\u03a9\u3068\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u300060k\u03a9\u3068\u3044\u3046\u62b5\u6297\u306f\u306a\u3044\u306e\u3067\u3001120k\u03a9\u3092\u4e26\u5217\u306b\u3057\u3066\u7d44\u307f\u4e0a\u3052\u305f\u3002<\/p>\n\n\n\n

Analog Disocovery \u306b\u3066\u5468\u6ce2\u6570\u7279\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u3068\u30011.5k\u03a9\u306b\u3066\u30c8\u30e9\u30f3\u30b9\u4e8c\u6b21\u5074\u3092\u30bf\u30fc\u30df\u30cd\u30fc\u30c8\u3059\u308b\u3060\u3051\u3067\u306f\u3060\u3081\u3067\u3001\u30c8\u30e9\u30f3\u30b9\u4e8c\u6b21\u5074\u306b\u3064\u306a\u304c\u308b NFB \u62b5\u6297\u3092\u5229\u7528\u3057\u3066\u3001\u5fae\u5206\u88dc\u6b63\u3092\u304b\u3051\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u3002\u3000\u4e0b\u56f3\u306b\u3066\u8d64\u306f\u5fae\u5206\u88dc\u6b63\u306a\u3057\u3001\u9752\u306f 15pF\u3001\u8336\u306f 22pF \u3067\u3042\u308a\u300115pF \u304c\u9069\u6b63\u3068\u8003\u3048\u305f\u3002<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n
\"\"
VP-7723A LPF=80kHz<\/figcaption><\/figure><\/div>\n\n\n\n

\u6b6a\u307f\u7387\u7279\u6027\u3092\u307f\u308b\u3068\u3001\u51fa\u529b\u96fb\u5727\u304c 2V \u3050\u3089\u3044\u304b\u3089\u300120Hz \u306e\u7279\u6027\u304c\u982d\u6253\u3061\u306b\u306a\u308b\u3002\u3000\u304a\u305d\u3089\u304f\u30c8\u30e9\u30f3\u30b9\u304c\u98fd\u548c\u3057\u3066\u304f\u308b\u305f\u3081\u3068\u601d\u308f\u308c\u308b\u304c\u3001\uff18V\u7a0b\u5ea6\u307e\u3067 0.01% \u3092\u5207\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u554f\u984c\u306b\u306f\u306a\u3089\u306a\u3044\u3002<\/p>\n\n\n\n

\u3068\u3053\u308d\u304c\u30fb\u30fb\u30fb\u3000\u4e0a\u8a18\u306e\u56de\u8def\u3060\u304c\u3001\u30e9\u30a4\u30f3\u30ec\u30b7\u30fc\u30d0\u3068\u3057\u3066\u52d5\u4f5c\u3057\u306a\u3044\u3002\u3000\u305d\u3093\u306a\u3070\u304b\u306a\u30fb\u30fb\u30fb\u3068\u601d\u3063\u305f\u306e\u3060\u304c\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u4e8c\u6b21\u5074\u304b\u3089 NFB \u3092\u304b\u3051\u3066\u3044\u308b\u3053\u3068\u304c\u539f\u56e0\u3089\u3057\u3044\u3002\u3000\u4e8c\u6b21\u5074\u306e\u30c8\u30e9\u30f3\u30b9\u306e\u4e2d\u70b9\u3092GND \u306b\u3064\u306a\u3050\u3068\u30e9\u30a4\u30f3\u30ec\u30b7\u30fc\u30d0\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3002<\/p>\n\n\n\n

\u305b\u3063\u304b\u304f\u4f5c\u3063\u3066\u3057\u307e\u3063\u305f\u3053\u3068\u3082\u3042\u308a\u3001\u8a66\u8074\u3057\u3066\u307f\u308b\u3068\u3001\u9ad8\u57df\u304c\u30ad\u30f3\u30ad\u30f3\u3068\u3046\u308b\u3055\u304f\u611f\u3058\u308b\u3068\u3053\u308d\u304c\u3042\u3063\u3066\u3001\u75b2\u308c\u308b\u611f\u3058\u304c\u3057\u305f\u3002\u3000\u3053\u306e\u73fe\u8c61\u306f\u3001\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0\u306e\u51fa\u529b\u306b\u30aa\u30da\u30a2\u30f3\u30d7\u30d0\u30c3\u30d5\u30a1\u304c\u306f\u3044\u3063\u3066\u3044\u3066\u3001\u30d5\u30e9\u30c3\u30c8\u30a2\u30f3\u30d7\u304c\u4f4e\u30a4\u30f3\u30d4\u30fc\u30bf\u30f3\u30b9\u30c9\u30e9\u30a4\u30d6\u3055\u308c\u308b\u305f\u3081\u3089\u3057\u3044\u3002\u3000\u305f\u304b\u3058\u3093\u3055\u3093\u306e PGA-2311\u30dc\u30ea\u30e5\u30fc\u30e0<\/a>\u3067\u3082\u3001100-200kHz \u306e LPF \u3092\u5165\u308c\u308b\u5bfe\u7b56\u3092\u3068\u3063\u3066\u3044\u308b\u3002\u3000\u672c\u30d5\u30e9\u30c3\u30c8\u30a2\u30f3\u30d7\u3067\u3082\u305d\u306e\u3088\u3046\u306b\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u82e5\u5e72\u306e\u6539\u5584\u306f\u8a8d\u3081\u3089\u308c\u305f\u304c\u3001\u57fa\u672c\u7684\u306a\u6027\u683c\u306f\u5909\u308f\u3089\u306a\u3044\u3088\u3046\u3060\u3002\u3000\u3069\u3046\u3084\u3089\u5931\u6557\u3089\u3057\u3044\u3002<\/p>\n\n\n\n

to be continued\u2026<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6b21\u306b\u8003\u3048\u305f\u306e\u306f\u3001\u307a\u308b\u3051\u5e2b\u5320\u306e\u7c21\u6613\u5e73\u8861\u2192\u4e0d\u5e73\u8861\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u5fdc\u7528\u3067\u3042\u308b\u3002\u3000\u4e0b\u8a18\u306e\u3088\u3046\u306b\u4f7f\u3048\u3070\u3001\u5e73\u8861\u5165\u529b\u30fb\u5e73\u8861\u51fa\u529b\u304c\u5f97\u3089\u308c\u308b\u306f\u305a\u3002 \u3068\u3053\u308d\u304c\u3001\u3053\u306e\u56de\u8def\u306f\u5165\u529b\u30a4\u30f3\u30d4\u30fc\u30bf\u30f3\u30b9\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u4e0d\u5e73\u8861\u5165\u529b\u306e\u3068\u304d\u306b\u3001\u30d0\u30e9\u30f3\u30b9\u304c\u4e0d\u826f\u3068\u306a\u308b\u3002 … \u7d9a\u304d\u3092\u8aad\u3080 \u30ea\u30e2\u30b3\u30f3\u4ed8\u304d\u30d0\u30e9\u30f3\u30b9\u578b\u30d7\u30ea\u30a2\u30f3\u30d7\u3000\u30d5\u30e9\u30c3\u30c8\u30a2\u30f3\u30d7\u306e\u8a66\u884c\u932f\u8aa4\uff08\u305d\u306e\uff12\uff09<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10,207,38],"tags":[218,209,210,208],"_links":{"self":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1460"}],"collection":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1460"}],"version-history":[{"count":3,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1460\/revisions"}],"predecessor-version":[{"id":1467,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1460\/revisions\/1467"}],"wp:attachment":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1460"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}